1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.
A209852
1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.
Terms
- a(0) =182a(1) =2829a(2) =43091a(3) =661963a(4) =10137464a(5) =155490654a(6) =2383064182a(7) =36538359367a(8) =560099384524
External references
- oeis: A209852